Psilocybn mushrooms or shrooms as they are popularly known contain medicinal qualities because of the presence of compounds like psilocybin and psilocin. However, shrooms or magic mushrooms are increasingly being used for substance abuse. High dosage of shrooms can lead to hallucinations and heavy headedness.

Shrooms do not last in the system for long. Shrooms stay in the blood stream for approximately seven days. However, their presence in the hair follicles can be detected for several more days after the consumption. The flushing out of shrooms varies from person to person and depends on factors like age, health etc.